PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-10:43:10
G01     74.2           33.2                3.4 +/-    0.84       5.5 +/-    0.84  0.030 / 0.040
G07     135.7          32.8                5.1 +/-    0.92       8.5 +/-    0.92  0.030 / 0.030
G11     54.8           31.7                1.4 +/-    0.73       2.4 +/-    0.73  0.050 / 0.090
G13     277.7          38.1                4.2 +/-    1.89       6.3 +/-    1.89  0.040 / 0.090
G15     309.2          11.9                2.2 +/-    1.69       5.9 +/-    1.69  0.110 / 0.100
G17     228.9          68.4                4.0 +/-    0.70       4.3 +/-    0.70  0.110 / 0.080
G18     50.1           18.6                0.8 +/-    1.27       1.9 +/-    1.27  0.090 / 0.170
G19     222.0          34.9                4.9 +/-    0.63       7.8 +/-    0.63  0.070 / 0.170
G28     12.5           60.2                2.6 +/-    0.66       3.0 +/-    0.66  0.090 / 0.120
G30     132.2          66.4                2.8 +/-    0.50       3.0 +/-    0.50  0.080 / 0.130