PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-22:57:40
G02     298.8          81.6               10.1 +/-    1.08      10.2 +/-    1.08  0.030 / 0.030
G05     166.7          26.7               16.9 +/-    1.53      31.8 +/-    1.53  0.030 / 0.030
G06     40.4           46.7                8.3 +/-    0.80      10.9 +/-    0.80  0.110 / 0.190
G12     319.2          64.3               10.2 +/-    0.46      11.2 +/-    0.46  0.130 / 0.180
G17     78.8           18.1               10.2 +/-    1.39      23.5 +/-    1.39  0.080 / 0.100
G19     66.6           33.5               10.4 +/-    2.50      17.0 +/-    2.50  0.090 / 0.120
G24     234.4          28.0               17.1 +/-    1.44      31.3 +/-    1.44  0.050 / 0.070
G25     317.8          21.2               10.9 +/-    1.95      23.3 +/-    1.95  0.050 / 0.040