PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-14:43:00
G01     107.4          25.1               10.9 +/-    1.51      21.2 +/-    1.51  0.130 / 0.210
G07     107.7          55.2                9.4 +/-    0.55      11.2 +/-    0.55  0.200 / 0.230
G08     41.8           19.1                7.5 +/-    1.61      16.8 +/-    1.61  0.030 / 0.020
G09     173.9          13.1               11.1 +/-    2.05      29.0 +/-    2.05  0.040 / 0.030
G11     86.9           40.5                8.4 +/-    1.08      12.1 +/-    1.08  0.030 / 0.030
G13     311.5          26.6                7.3 +/-    1.26      13.7 +/-    1.26  0.030 / 0.040
G17     204.9          39.6               11.9 +/-    0.86      17.5 +/-    0.86  0.090 / 0.230
G19     208.6          13.9                9.4 +/-    2.24      24.1 +/-    2.24  0.080 / 0.190
G28     316.5          60.6                6.6 +/-    0.93       7.5 +/-    0.93  0.100 / 0.120
G30     9.6            76.3                8.9 +/-    0.96       9.1 +/-    0.96  0.080 / 0.130