PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/19-15:27:40
G03     211.2          58.7               11.1 +/-    0.42      12.8 +/-    0.42  0.040 / 0.040
G07     255.3          13.5               10.7 +/-    4.01      27.7 +/-    4.01  0.040 / 0.040
G09     309.2          25.9                7.7 +/-    1.26      14.7 +/-    1.26  0.170 / 0.310
G14     107.2          10.3                9.8 +/-    2.07      27.0 +/-    2.07  0.140 / 0.370
G16     98.2           64.0               10.0 +/-    0.46      11.0 +/-    0.46  0.080 / 0.080
G22     184.7          40.2               11.3 +/-    1.00      16.4 +/-    1.00  0.060 / 0.060
G23     333.7          61.9                9.3 +/-    0.49      10.3 +/-    0.49  0.040 / 0.080
G26     54.3           43.3                9.6 +/-    0.91      13.3 +/-    0.91  0.030 / 0.040
G31     58.8           10.0                9.6 +/-    3.79      26.6 +/-    3.79  0.030 / 0.040