PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-21:28:10
G02     2.6            73.7                9.5 +/-    0.52       9.9 +/-    0.52  0.180 / 0.410
G05     160.2          41.2               12.0 +/-    1.42      17.2 +/-    1.42  0.140 / 0.430
G06     44.2           32.2                7.7 +/-    0.51      12.9 +/-    0.51  0.040 / 0.070
G12     283.9          79.7                8.7 +/-    0.61       8.9 +/-    0.61  0.040 / 0.080
G19     80.5           24.9               10.6 +/-    0.67      20.7 +/-    0.67  0.030 / 0.050
G24     222.1          17.3                9.5 +/-    4.20      22.2 +/-    4.20  0.030 / 0.040
G25     315.4          35.5               11.1 +/-    2.57      17.4 +/-    2.57  0.040 / 0.040
G29     291.1          12.1               11.5 +/-    2.59      30.7 +/-    2.59  0.050 / 0.040