PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-14:42:50
G01     44.5           20.3                8.4 +/-    1.26      18.3 +/-    1.26  0.060 / 0.090
G06     176.5          32.8               11.3 +/-    1.21      18.8 +/-    1.21  0.080 / 0.090
G13     245.1          25.9               10.9 +/-    1.67      20.8 +/-    1.67  0.180 / 0.270
G15     278.6          14.0                7.8 +/-    0.99      19.8 +/-    0.99  0.150 / 0.260
G17     356.1          73.4               10.7 +/-    0.91      11.1 +/-    0.91  0.120 / 0.180
G19     265.3          67.7                9.6 +/-    0.82      10.2 +/-    0.82  0.080 / 0.220
G24     318.7          12.9                6.5 +/-    1.84      17.0 +/-    1.84  0.040 / 0.030
G28     64.1           49.4               10.3 +/-    1.01      13.0 +/-    1.01  0.020 / 0.040
G30     153.0          35.3               10.6 +/-    1.39      16.8 +/-    1.39  0.070 / 0.150