PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-01:28:00
G02     345.3          78.9               10.8 +/-    0.53      11.0 +/-    0.53  0.040 / 0.090
G05     163.5          33.4               14.3 +/-    1.67      23.5 +/-    1.67  0.070 / 0.050
G06     41.4           41.1                9.7 +/-    1.16      13.8 +/-    1.16  0.030 / 0.030
G12     313.0          70.0               11.0 +/-    0.43      11.7 +/-    0.43  0.030 / 0.020
G17     83.6           15.6               11.5 +/-    1.38      28.3 +/-    1.38  0.040 / 0.070
G19     73.6           28.8               11.6 +/-    1.00      20.9 +/-    1.00  0.060 / 0.070
G24     229.3          23.5               14.5 +/-    3.34      29.4 +/-    3.34  0.130 / 0.140
G25     317.5          27.0                9.7 +/-    1.65      18.1 +/-    1.65  0.130 / 0.160