PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-18:57:40
G07     44.0           68.0               12.2 +/-    1.14      13.1 +/-    1.14  0.040 / 0.040
G08     57.4           44.7               12.2 +/-    0.83      16.6 +/-    0.83  0.050 / 0.030
G09     179.9          46.4               14.0 +/-    0.82      18.5 +/-    0.82  0.150 / 0.100
G11     125.1          31.0               14.3 +/-    1.20      24.5 +/-    1.20  0.170 / 0.120
G18     108.7          12.4               13.5 +/-    1.54      35.6 +/-    1.54  0.070 / 0.050
G23     160.6          16.0               14.0 +/-    2.23      34.0 +/-    2.23  0.080 / 0.050
G27     39.6           15.5                9.9 +/-    3.01      24.3 +/-    3.01  0.120 / 0.360
G28     260.5          44.4               15.8 +/-    3.30      21.5 +/-    3.30  0.130 / 0.320
G30     325.1          54.9               11.5 +/-    0.39      13.7 +/-    0.39  0.040 / 0.040