PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-23:28:00
G01     117.9          18.9               10.6 +/-    0.82      24.0 +/-    0.82  0.040 / 0.080
G07     83.5           66.0                8.3 +/-    0.35       9.0 +/-    0.35  0.040 / 0.060
G08     45.2           32.7                7.3 +/-    0.88      12.1 +/-    0.88  0.040 / 0.060
G09     177.6          25.5                8.8 +/-    2.23      16.9 +/-    2.23  0.040 / 0.070
G11     109.0          40.4                9.9 +/-    0.67      14.3 +/-    0.67  0.050 / 0.160
G13     317.4          19.9                6.3 +/-    2.89      13.8 +/-    2.89  0.050 / 0.170
G17     202.7          24.3                9.7 +/-    0.96      19.3 +/-    0.96  0.130 / 0.240
G28     296.5          58.2                7.5 +/-    1.00       8.7 +/-    1.00  0.110 / 0.260
G30     0.5            72.2                8.2 +/-    1.13       8.5 +/-    1.13  0.030 / 0.040