PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-05:57:50
G02     200.4          21.3                5.8 +/-    2.21      12.5 +/-    2.21  0.090 / 0.120
G06     172.8          52.9               10.0 +/-    0.79      12.2 +/-    0.79  0.090 / 0.080
G13     226.1          12.7                2.9 +/-   16.35       7.6 +/-   16.35  0.050 / 0.070
G17     26.2           57.1                7.5 +/-    1.40       8.7 +/-    1.40  0.060 / 0.080
G19     318.3          70.7                6.8 +/-    0.63       7.1 +/-    0.63  0.080 / 0.260
G24     307.0          33.5                3.3 +/-    1.60       5.4 +/-    1.60  0.100 / 0.210
G28     87.0           41.2                9.6 +/-    0.69      13.6 +/-    0.69  0.050 / 0.040
G30     157.6          15.0               10.3 +/-    3.54      25.6 +/-    3.54  0.040 / 0.030