PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-23:58:00
G02     242.3          76.4               14.5 +/-    0.87      14.8 +/-    0.87  0.050 / 0.060
G05     171.0          16.4               20.8 +/-    1.13      49.9 +/-    1.13  0.040 / 0.060
G06     40.1           61.8               12.9 +/-    0.94      14.5 +/-    0.94  0.080 / 0.120
G12     320.7          48.7               12.8 +/-    0.90      16.4 +/-    0.90  0.070 / 0.120
G17     70.6           21.9               12.1 +/-    0.63      25.4 +/-    0.63  0.210 / 0.340
G19     56.6           38.5               13.0 +/-    0.49      19.4 +/-    0.49  0.170 / 0.270
G24     244.2          34.8               18.3 +/-    1.30      29.2 +/-    1.30  0.040 / 0.040
G25     316.3          12.5               10.8 +/-    5.53      28.4 +/-    5.53  0.050 / 0.040