PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/23-14:58:10
G08     310.0          18.3                3.7 +/-    1.60       8.6 +/-    1.60  0.050 / 0.070
G10     332.4          60.0                3.5 +/-    0.67       4.0 +/-    0.67  0.060 / 0.070
G14     218.8          30.8                6.5 +/-    1.32      11.2 +/-    1.32  0.040 / 0.050
G18     43.9           57.5                4.5 +/-    0.45       5.2 +/-    0.45  0.040 / 0.050
G21     134.9          52.7                6.8 +/-    0.92       8.3 +/-    0.92  0.040 / 0.080
G24     74.0           30.4                5.9 +/-    0.45      10.3 +/-    0.45  0.050 / 0.080
G27     272.4          37.4                5.3 +/-    0.82       8.1 +/-    0.82  0.090 / 0.180
G32     224.2          53.2                6.5 +/-    1.15       7.9 +/-    1.15  0.060 / 0.150