PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-15:43:00
G01     64.8           31.6                9.4 +/-    1.05      15.9 +/-    1.05  0.100 / 0.240
G06     181.1          11.3               -1.3 +/-   38.62      -3.6 +/-   38.62  0.080 / 0.220
G07     139.8          23.1                8.5 +/-    2.51      17.4 +/-    2.51  0.080 / 0.120
G11     49.6           24.3                7.7 +/-    2.00      15.3 +/-    2.00  0.070 / 0.130
G13     270.5          36.1                9.9 +/-    1.24      15.4 +/-    1.24  0.060 / 0.120
G15     301.4          14.8                4.3 +/-    1.61      10.8 +/-    1.61  0.090 / 0.120
G17     248.5          75.9               11.5 +/-    0.59      11.8 +/-    0.59  0.030 / 0.030
G19     228.6          48.8              -20.8 +/-   56.42     -26.7 +/-   56.42  0.030 / 0.030
G28     28.3           57.9                8.7 +/-    3.87      10.0 +/-    3.87  0.020 / 0.020
G30     139.6          59.4               10.0 +/-    0.38      11.5 +/-    0.38  0.020 / 0.020