PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-20:12:50
G01     96.9           30.0               14.6 +/-    1.17      25.5 +/-    1.17  0.080 / 0.140
G07     119.5          51.0               13.9 +/-    0.56      17.3 +/-    0.56  0.070 / 0.160
G08     42.1           15.4                8.5 +/-    1.69      20.8 +/-    1.69  0.130 / 0.250
G11     77.6           42.4               12.8 +/-    0.90      17.9 +/-    0.90  0.110 / 0.320
G13     301.2          33.6               10.6 +/-    2.24      17.3 +/-    2.24  0.070 / 0.110
G17     211.6          43.4               15.2 +/-    0.52      21.0 +/-    0.52  0.070 / 0.110
G18     70.4           24.8               11.6 +/-    1.20      22.7 +/-    1.20  0.030 / 0.040
G19     212.3          20.8               15.2 +/-    3.64      32.9 +/-    3.64  0.030 / 0.040
G28     338.2          61.9               11.5 +/-    0.33      12.9 +/-    0.33  0.020 / 0.020
G30     84.0           78.0               12.5 +/-    0.64      12.7 +/-    0.64  0.030 / 0.020