PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-21:58:00
G02     330.8          80.0                7.6 +/-    0.55       7.7 +/-    0.55  0.080 / 0.210
G05     164.7          31.1               12.3 +/-    1.54      21.0 +/-    1.54  0.080 / 0.170
G06     40.2           44.2                7.8 +/-    0.61      10.6 +/-    0.61  0.090 / 0.190
G12     316.0          65.5                6.8 +/-    1.02       7.4 +/-    1.02  0.130 / 0.220
G17     83.0           13.6                8.8 +/-    1.20      22.6 +/-    1.20  0.020 / 0.040
G19     72.3           28.1                7.8 +/-    0.46      14.2 +/-    0.46  0.030 / 0.040
G24     230.3          24.5               11.3 +/-    1.63      22.4 +/-    1.63  0.030 / 0.040
G25     317.3          25.9                7.5 +/-    2.87      14.3 +/-    2.87  0.040 / 0.030