PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-20:27:30
G02     8.7            71.1               13.3 +/-    0.35      13.9 +/-    0.35  0.040 / 0.060
G05     158.3          44.9               16.5 +/-    1.38      22.2 +/-    1.38  0.030 / 0.080
G06     45.7           28.7                9.8 +/-    0.91      17.7 +/-    0.91  0.020 / 0.030
G12     253.2          81.3               11.6 +/-    0.72      11.7 +/-    0.72  0.030 / 0.030
G19     83.7           23.0               12.6 +/-    1.44      25.7 +/-    1.44  0.050 / 0.090
G24     219.2          14.6               15.4 +/-    3.00      38.8 +/-    3.00  0.060 / 0.090
G25     313.7          39.3               12.6 +/-    1.56      18.5 +/-    1.56  0.140 / 0.350
G29     293.8          14.5               13.1 +/-    1.95      33.0 +/-    1.95  0.240 / 0.410