PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/12-23:58:00
G01     104.2          26.6                9.0 +/-    0.98      16.9 +/-    0.98  0.070 / 0.140
G07     112.7          52.3                8.6 +/-    0.30      10.5 +/-    0.30  0.120 / 0.130
G08     41.4           16.1                5.3 +/-    3.23      12.9 +/-    3.23  0.030 / 0.050
G09     174.3          11.5               10.4 +/-    5.61      28.0 +/-    5.61  0.040 / 0.050
G11     82.9           42.5                0.0 +/-    0.89       0.0 +/-    0.89  0.030 / 0.040
G13     307.2          30.8                9.1 +/-    1.44      15.7 +/-    1.44  0.020 / 0.040
G17     205.7          42.8               10.2 +/-    0.82      14.1 +/-    0.82  0.070 / 0.110
G18     73.3           23.3                6.6 +/-    1.28      13.5 +/-    1.28  0.080 / 0.130
G28     316.5          60.3                7.0 +/-    0.84       7.9 +/-    0.84  0.280 / 0.300
G30     34.2           79.3                7.5 +/-    0.79       7.7 +/-    0.79  0.240 / 0.480