PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-22:27:20
G02     36.5           52.5               11.5 +/-    0.60      14.1 +/-    0.60  0.040 / 0.030
G05     128.5          65.7               11.7 +/-    0.64      12.7 +/-    0.64  0.040 / 0.040
G06     56.7           11.3               10.1 +/-    2.36      27.4 +/-    2.36  0.040 / 0.030
G12     190.7          61.2               12.4 +/-    0.42      13.9 +/-    0.42  0.030 / 0.030
G25     289.8          55.9               11.3 +/-    2.60      13.4 +/-    2.60  0.120 / 0.150
G29     309.8          30.2               11.1 +/-    1.88      19.3 +/-    1.88  0.100 / 0.140