PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-14:27:50
G01     79.0           33.0                8.2 +/-    1.54      13.5 +/-    1.54  0.160 / 0.250
G07     132.8          34.3               10.4 +/-    1.45      16.6 +/-    1.45  0.350 / 0.270
G11     58.0           32.6                9.1 +/-    1.67      15.2 +/-    1.67  0.040 / 0.030
G13     285.9          36.7               10.0 +/-    1.81      15.4 +/-    1.81  0.030 / 0.030
G15     311.0          12.0                7.4 +/-    1.77      19.8 +/-    1.77  0.060 / 0.070
G17     223.3          65.3               10.8 +/-    1.04      11.7 +/-    1.04  0.060 / 0.080
G19     219.3          37.4               11.8 +/-    2.39      17.9 +/-    2.39  0.100 / 0.090
G28     6.9            60.5                9.5 +/-    1.24      10.8 +/-    1.24  0.080 / 0.100
G30     123.5          70.8               10.6 +/-    0.65      11.1 +/-    0.65  0.040 / 0.040