PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/01-04:13:00
G01     39.0           12.6                2.2 +/-    0.77       5.8 +/-    0.77  0.080 / 0.340
G02     198.8          14.6                6.2 +/-    1.67      15.5 +/-    1.67  0.100 / 0.380
G06     176.5          42.3               12.1 +/-    1.07      17.0 +/-    1.07  0.050 / 0.090
G13     234.4          18.7                8.1 +/-    2.29      18.4 +/-    2.29  0.050 / 0.110
G15     265.6          10.6                4.2 +/-    2.11      11.5 +/-    2.11  0.100 / 0.140
G17     9.0            67.0                5.1 +/-    1.02       5.5 +/-    1.02  0.150 / 0.170
G19     295.9          71.2                6.1 +/-    0.83       6.4 +/-    0.83  0.030 / 0.040
G24     315.1          22.5                1.7 +/-    1.18       3.6 +/-    1.18  0.030 / 0.040
G28     78.8           43.7                5.9 +/-    0.71       8.1 +/-    0.71  0.150 / 0.300
G30     154.6          19.2                8.8 +/-    2.19      19.8 +/-    2.19  0.120 / 0.360