PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/23-04:28:00
G07     44.7           69.2                5.0 +/-    0.97       5.3 +/-    0.97  0.130 / 0.180
G08     52.4           40.5                4.1 +/-    1.10       5.9 +/-    1.10  0.090 / 0.200
G09     176.0          37.9                7.8 +/-    1.08      11.8 +/-    1.08  0.030 / 0.040
G11     120.8          33.2                6.5 +/-    1.66      10.7 +/-    1.66  0.030 / 0.030
G17     198.4          12.9                4.2 +/-    2.18      11.0 +/-    2.18  0.030 / 0.020
G23     161.4          13.6                4.9 +/-    1.75      12.6 +/-    1.75  0.030 / 0.030
G27     38.5           12.6                2.0 +/-    2.34       5.4 +/-    2.34  0.090 / 0.110
G28     267.8          49.0                5.6 +/-    3.90       7.2 +/-    3.90  0.110 / 0.140
G30     326.2          55.7                4.6 +/-    0.68       5.4 +/-    0.68  0.190 / 0.400