PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/14-07:42:50
G10     265.1          36.8                6.6 +/-    0.96      10.1 +/-    0.96  0.290 / 0.430
G13     42.9           20.0                4.3 +/-    2.78       9.5 +/-    2.78  0.250 / 0.370
G15     60.4           49.3                5.1 +/-    0.67       6.5 +/-    0.67  0.130 / 0.070
G16     280.5          12.5                5.2 +/-    1.67      13.8 +/-    1.67  0.170 / 0.080
G20     28.4           60.1                5.8 +/-    0.81       6.5 +/-    0.81  0.040 / 0.040
G21     359.6          71.0                5.6 +/-    0.65       5.9 +/-    0.65  0.040 / 0.040
G24     121.9          13.1                5.2 +/-    1.69      13.5 +/-    1.69  0.160 / 0.130
G27     319.1          18.1                4.0 +/-    2.40       9.3 +/-    2.40  0.160 / 0.150
G29     167.8          32.9                5.7 +/-    1.73       9.4 +/-    1.73  0.040 / 0.040