PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-10:42:40
G01     74.8           33.2                1.3 +/-    0.89       2.1 +/-    0.89  0.050 / 0.070
G07     135.4          33.3                5.1 +/-    1.03       8.4 +/-    1.03  0.070 / 0.060
G11     55.2           32.0                2.1 +/-    1.37       3.5 +/-    1.37  0.060 / 0.080
G13     278.3          38.1                3.0 +/-    1.52       4.5 +/-    1.52  0.090 / 0.250
G15     309.6          11.7                2.0 +/-    9.88       5.3 +/-    9.88  0.040 / 0.030
G17     228.2          67.9                4.5 +/-    0.80       4.9 +/-    0.80  0.040 / 0.020
G18     50.5           18.8                2.6 +/-    2.90       5.9 +/-    2.90  0.060 / 0.100
G19     221.7          34.5                5.9 +/-    2.00       9.5 +/-    2.00  0.070 / 0.110
G28     11.6           60.3                3.6 +/-    1.75       4.1 +/-    1.75  0.130 / 0.180
G30     131.5          66.8                5.3 +/-    1.17       5.7 +/-    1.17  0.180 / 0.190