PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/21-22:43:00
G01     95.5           30.5               14.3 +/-    1.13      24.7 +/-    1.13  0.070 / 0.090
G07     120.9          49.9               14.4 +/-    0.52      18.2 +/-    0.52  0.060 / 0.080
G08     42.2           14.7                8.7 +/-    3.47      21.7 +/-    3.47  0.130 / 0.250
G11     77.2           42.7               12.5 +/-    1.36      17.4 +/-    1.36  0.340 / 0.360
G13     300.1          33.9               10.0 +/-    2.05      16.2 +/-    2.05  0.030 / 0.040
G17     212.2          45.7               15.5 +/-    0.79      20.6 +/-    0.79  0.040 / 0.040
G18     349.1          -15.4               8.7 +/-    1.10      21.5 +/-    1.10  0.040 / 0.060
G19     212.7          22.7               17.0 +/-    3.14      35.0 +/-    3.14  0.040 / 0.070
G28     341.2          61.9               11.4 +/-    0.79      12.8 +/-    0.79  0.060 / 0.070
G30     93.7           76.2               13.1 +/-    0.28      13.4 +/-    0.28  0.040 / 0.060