PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-01:57:40
G01     128.7          10.3               -6.7 +/-   35.78     -18.7 +/-   35.78  0.070 / 0.110
G07     46.0           69.6                6.2 +/-    0.77       6.5 +/-    0.77  0.080 / 0.090
G08     52.7           42.0                4.6 +/-    0.96       6.4 +/-    0.96  0.030 / 0.020
G09     179.2          39.3               10.7 +/-    1.19      15.8 +/-    1.19  0.030 / 0.030
G11     122.3          33.3                8.6 +/-    0.98      14.0 +/-    0.98  0.050 / 0.040
G17     199.8          12.8                6.4 +/-    1.90      16.7 +/-    1.90  0.060 / 0.040
G28     273.9          52.3                7.9 +/-    2.98       9.7 +/-    2.98  0.150 / 0.260
G30     334.8          61.1                4.1 +/-    0.64       4.7 +/-    0.64  0.070 / 0.270