PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-14:27:30
G03     203.5          49.4               11.1 +/-    1.57      14.1 +/-    1.57  0.040 / 0.040
G07     263.1          19.6                8.5 +/-    1.37      18.8 +/-    1.37  0.040 / 0.030
G09     313.9          34.4                7.2 +/-    1.06      11.5 +/-    1.06  0.090 / 0.160
G16     72.6           61.8                8.7 +/-    0.59       9.7 +/-    0.59  0.090 / 0.210
G22     182.4          30.3               11.0 +/-    0.93      19.1 +/-    0.93  0.050 / 0.040
G23     348.0          70.7                8.3 +/-    0.76       8.7 +/-    0.76  0.040 / 0.040
G26     47.4           35.2                8.0 +/-    0.92      12.7 +/-    0.92  0.040 / 0.060
G27     127.9          16.1               10.6 +/-    2.96      25.6 +/-    2.96  0.030 / 0.040