PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-23:57:40
G02     333.4          80.2               10.1 +/-    0.63      10.2 +/-    0.63  0.020 / 0.030
G05     164.5          31.5               17.2 +/-    1.47      29.2 +/-    1.47  0.030 / 0.020
G06     41.1           42.3                9.0 +/-    0.56      12.6 +/-    0.56  0.060 / 0.090
G12     315.1          68.9               10.9 +/-    0.50      11.6 +/-    0.50  0.080 / 0.080
G17     82.6           15.7               11.6 +/-    2.81      28.4 +/-    2.81  0.140 / 0.220
G19     71.5           30.3               11.4 +/-    0.84      19.8 +/-    0.84  0.180 / 0.320
G24     230.4          24.7               16.2 +/-    2.34      32.0 +/-    2.34  0.170 / 0.270
G25     317.7          25.5               10.9 +/-    1.57      21.1 +/-    1.57  0.180 / 0.190