PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-00:27:50
G01     111.7          23.0                8.5 +/-    2.02      17.4 +/-    2.02  0.050 / 0.040
G07     98.3           61.9                6.5 +/-    0.72       7.3 +/-    0.72  0.040 / 0.040
G08     43.0           26.4                5.1 +/-    2.18       9.7 +/-    2.18  0.160 / 0.130
G09     176.5          18.9                9.8 +/-    1.69      22.1 +/-    1.69  0.290 / 0.120
G11     99.4           42.6                9.1 +/-    1.07      12.8 +/-    1.07  0.120 / 0.120
G13     313.6          24.7                5.0 +/-    1.42       9.8 +/-    1.42  0.080 / 0.090
G17     204.6          31.6                8.1 +/-    1.20      13.8 +/-    1.20  0.110 / 0.150
G28     309.7          60.2                5.2 +/-    1.18       5.9 +/-    1.18  0.130 / 0.150
G30     25.8           76.5                6.7 +/-    0.53       6.9 +/-    0.53  0.060 / 0.060