PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-22:43:10
G01     38.6           11.8               10.2 +/-    2.21      27.3 +/-    2.21  0.080 / 0.390
G02     199.2          14.9               21.0 +/-    3.68      52.4 +/-    3.68  0.080 / 0.340
G06     173.1          46.1               16.7 +/-    0.86      22.2 +/-    0.86  0.130 / 0.180
G13     233.0          17.9               18.2 +/-    3.65      42.1 +/-    3.65  0.180 / 0.230
G15     265.4          10.1               14.2 +/-    1.76      39.5 +/-    1.76  0.040 / 0.080
G17     2.4            68.5               13.6 +/-    0.74      14.6 +/-    0.74  0.050 / 0.080
G19     294.9          70.6               13.6 +/-    0.55      14.3 +/-    0.55  0.090 / 0.170
G24     314.2          24.1               10.2 +/-    3.69      20.3 +/-    3.69  0.110 / 0.230
G28     79.8           43.4               12.9 +/-    0.89      17.8 +/-    0.89  0.120 / 0.440
G30     155.5          20.1               18.4 +/-    4.37      40.3 +/-    4.37  0.230 / 0.350