PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-21:27:50
G01     113.5          21.9               14.3 +/-    1.37      30.0 +/-    1.37  0.130 / 0.210
G07     94.4           63.4               13.5 +/-    0.71      14.9 +/-    0.71  0.140 / 0.180
G08     43.9           30.1                9.7 +/-    0.86      17.0 +/-    0.86  0.090 / 0.160
G09     176.7          20.6               15.5 +/-    1.28      33.6 +/-    1.28  0.080 / 0.170
G11     101.4          42.2               13.9 +/-    1.30      19.6 +/-    1.30  0.070 / 0.070
G13     314.6          23.7               11.2 +/-    1.25      22.6 +/-    1.25  0.080 / 0.070
G17     204.6          27.6               14.4 +/-    1.66      26.5 +/-    1.66  0.080 / 0.130
G18     88.2           22.9               11.8 +/-    1.16      24.1 +/-    1.16  0.080 / 0.110
G28     305.7          59.7               11.6 +/-    0.78      13.2 +/-    0.78  0.050 / 0.060
G30     9.7            74.9               13.6 +/-    0.69      14.0 +/-    0.69  0.050 / 0.100