PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-22:57:30
G02     333.6          80.0               13.5 +/-    0.64      13.7 +/-    0.64  0.030 / 0.030
G05     164.4          32.0               20.1 +/-    2.00      33.7 +/-    2.00  0.040 / 0.030
G06     41.3           41.4               11.8 +/-    1.07      16.8 +/-    1.07  0.180 / 0.280
G12     314.2          70.1               13.7 +/-    0.88      14.5 +/-    0.88  0.370 / 0.220
G17     83.4           14.7               13.0 +/-    2.79      32.7 +/-    2.79  0.100 / 0.080
G19     71.9           30.2               13.7 +/-    1.66      23.8 +/-    1.66  0.040 / 0.070
G24     229.7          24.2               19.8 +/-    2.19      39.4 +/-    2.19  0.140 / 0.180
G25     317.6          26.3               13.6 +/-    1.48      25.9 +/-    1.48  0.160 / 0.200