PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-15:58:00
G01     43.0           18.5                9.1 +/-    0.79      20.8 +/-    0.79  0.150 / 0.410
G06     175.6          35.7               12.7 +/-    1.42      20.0 +/-    1.42  0.170 / 0.460
G13     242.6          24.3               11.4 +/-    1.81      22.7 +/-    1.81  0.080 / 0.170
G15     277.0          13.3               12.2 +/-    1.59      31.7 +/-    1.59  0.080 / 0.180
G17     1.9            71.5               11.6 +/-    0.56      12.1 +/-    0.56  0.070 / 0.110
G19     272.2          69.2               10.5 +/-    0.77      11.2 +/-    0.77  0.060 / 0.110
G24     318.2          14.9               11.0 +/-    1.41      27.5 +/-    1.41  0.030 / 0.040
G28     67.4           48.3               11.5 +/-    0.41      14.8 +/-    0.41  0.030 / 0.040
G30     153.9          33.1               12.0 +/-    0.96      19.8 +/-    0.96  0.080 / 0.260