PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-01:43:00
G01     72.7           33.1                3.5 +/-    1.61       5.7 +/-    1.61  0.040 / 0.050
G07     136.5          32.7                6.6 +/-    1.56      10.9 +/-    1.56  0.040 / 0.050
G11     56.7           33.9                3.6 +/-    2.85       5.8 +/-    2.85  0.040 / 0.030
G13     277.5          37.4                5.8 +/-    1.90       8.8 +/-    1.90  0.030 / 0.030
G15     303.3          15.4                2.5 +/-    1.40       6.1 +/-    1.40  0.060 / 0.090
G17     230.5          66.1                5.0 +/-    1.12       5.4 +/-    1.12  0.050 / 0.070
G19     223.1          41.0                5.6 +/-    1.76       8.0 +/-    1.76  0.100 / 0.140
G28     18.0           59.4                4.4 +/-    1.29       5.0 +/-    1.29  0.090 / 0.110
G30     133.6          58.4                6.3 +/-    0.58       7.2 +/-    0.58  0.050 / 0.100