PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-14:43:10
G01     93.5           31.0                9.9 +/-    0.69      17.0 +/-    0.69  0.020 / 0.040
G07     122.8          48.0                9.5 +/-    0.66      12.3 +/-    0.66  0.020 / 0.040
G11     71.4           40.5                8.8 +/-    0.54      12.7 +/-    0.54  0.040 / 0.080
G13     297.6          35.2                9.3 +/-    0.93      14.8 +/-    0.93  0.040 / 0.090
G17     212.5          50.6               11.4 +/-    1.44      14.3 +/-    1.44  0.030 / 0.060
G18     66.4           24.2                7.6 +/-    0.78      15.2 +/-    0.78  0.030 / 0.060
G19     213.6          21.8               11.3 +/-    0.66      23.9 +/-    0.66  0.100 / 0.120
G28     343.2          61.9                8.4 +/-    0.84       9.4 +/-    0.84  0.090 / 0.140
G30     90.0           78.6                9.3 +/-    0.55       9.4 +/-    0.55  0.060 / 0.120