PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-00:57:50
G07     340.4          60.4                6.3 +/-    0.42       7.2 +/-    0.42  0.150 / 0.120
G08     91.9           52.8                8.1 +/-    0.91       9.9 +/-    0.91  0.090 / 0.120
G09     188.3          69.4               10.9 +/-    0.78      11.6 +/-    0.78  0.040 / 0.040
G11     143.9          15.5                9.6 +/-    2.63      23.7 +/-    2.63  0.030 / 0.030
G23     156.9          36.7               10.3 +/-    0.55      15.9 +/-    0.55  0.050 / 0.040
G27     50.2           28.3                3.1 +/-    2.22       5.6 +/-    2.22  0.050 / 0.040
G28     241.7          34.0                8.9 +/-    1.29      14.4 +/-    1.29  0.030 / 0.030
G30     307.7          40.7                6.6 +/-    1.10       9.4 +/-    1.10  0.030 / 0.030