PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-11:27:40
G01     74.8           33.3                2.9 +/-    0.65       4.8 +/-    0.65  0.040 / 0.080
G07     135.4          33.4                7.1 +/-    1.28      11.6 +/-    1.28  0.030 / 0.080
G11     55.3           32.1                1.8 +/-    0.89       3.0 +/-    0.89  0.030 / 0.030
G13     278.4          38.1                8.3 +/-    1.82      12.5 +/-    1.82  0.030 / 0.030
G15     310.1          11.4                1.7 +/-    1.26       4.5 +/-    1.26  0.110 / 0.110
G17     228.1          67.6                8.4 +/-    1.07       9.0 +/-    1.07  0.110 / 0.110
G18     50.7           19.0                1.2 +/-    1.07       2.8 +/-    1.07  0.090 / 0.120
G19     221.7          34.3                8.8 +/-    0.60      14.1 +/-    0.60  0.090 / 0.120
G28     11.9           60.3                3.9 +/-    0.57       4.4 +/-    0.57  0.070 / 0.210
G30     131.5          66.8                5.3 +/-    0.44       5.7 +/-    0.44  0.070 / 0.210