PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/26-20:27:20
G02     233.0          72.0               11.3 +/-    0.61      11.8 +/-    0.61  0.070 / 0.090
G05     172.7          13.6               14.3 +/-    3.00      36.7 +/-    3.00  0.070 / 0.100
G06     41.9           60.3               11.5 +/-    0.43      13.1 +/-    0.43  0.050 / 0.280
G12     322.0          50.9               10.4 +/-    0.83      12.9 +/-    0.83  0.060 / 0.290
G17     67.7           25.3               12.0 +/-    0.76      23.3 +/-    0.76  0.040 / 0.060
G19     51.6           42.8               11.2 +/-    0.83      15.6 +/-    0.83  0.040 / 0.070
G24     247.9          36.6               13.9 +/-    1.21      21.4 +/-    1.21  0.060 / 0.120