PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-03:58:00
G01     105.2          26.3                6.2 +/-    0.66      11.8 +/-    0.66  0.040 / 0.050
G07     111.0          54.5                4.2 +/-    0.32       5.0 +/-    0.32  0.040 / 0.050
G08     41.4           16.3                2.1 +/-    0.94       5.0 +/-    0.94  0.080 / 0.130
G09     173.1          10.5                4.5 +/-    3.07      12.5 +/-    3.07  0.080 / 0.130
G11     83.9           42.4                4.7 +/-    0.49       6.5 +/-    0.49  0.070 / 0.130
G13     307.9          30.2                2.3 +/-    2.33       3.9 +/-    2.33  0.080 / 0.160
G17     205.4          42.4                6.1 +/-    1.05       8.5 +/-    1.05  0.060 / 0.170
G18     74.7           23.4                2.7 +/-    0.80       5.5 +/-    0.80  0.070 / 0.150
G28     317.0          60.6               -5.8 +/-    0.71      -6.6 +/-    0.71  0.030 / 0.030
G30     24.3           78.8                4.5 +/-    0.34       4.6 +/-    0.34  0.030 / 0.030