PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-01:57:50
G08     312.2          17.1                7.6 +/-    1.09      18.1 +/-    1.09  0.030 / 0.040
G10     334.8          60.5                8.8 +/-    0.43      10.0 +/-    0.43  0.030 / 0.040
G14     217.6          30.0               12.2 +/-    2.70      21.4 +/-    2.70  0.070 / 0.100
G15     47.0           10.0                6.9 +/-    4.11      19.3 +/-    4.11  0.060 / 0.080
G20     36.7           60.6                8.6 +/-    0.52       9.7 +/-    0.52  0.030 / 0.030
G21     134.2          57.9               11.4 +/-    0.55      13.2 +/-    0.55  0.030 / 0.030
G24     74.7           30.2               10.1 +/-    1.36      17.5 +/-    1.36  0.140 / 0.220
G27     275.9          37.6               10.4 +/-    1.80      15.8 +/-    1.80  0.130 / 0.210
G32     222.6          50.9               11.8 +/-    2.04      14.7 +/-    2.04  0.130 / 0.500