PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-18:43:00
G02     204.0          34.9               14.8 +/-    1.08      23.5 +/-    1.08  0.080 / 0.150
G06     152.9          71.4               12.0 +/-    0.65      12.6 +/-    0.65  0.150 / 0.150
G12     309.0          18.6                9.6 +/-    1.12      21.8 +/-    1.12  0.060 / 0.090
G17     36.4           49.0                9.3 +/-    1.36      11.9 +/-    1.36  0.060 / 0.090
G19     357.7          65.6               10.1 +/-    0.48      10.9 +/-    0.48  0.060 / 0.050
G24     295.6          39.4                9.2 +/-    5.34      13.5 +/-    5.34  0.040 / 0.050
G28     103.7          30.4               11.1 +/-    0.76      19.4 +/-    0.76  0.030 / 0.030