PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-14:57:40
G02     213.7          52.9               11.3 +/-    1.10      13.8 +/-    1.10  0.070 / 0.080
G06     70.2           76.8                9.4 +/-    0.31       9.6 +/-    0.31  0.050 / 0.070
G12     316.5          31.9                9.8 +/-    1.72      16.4 +/-    1.72  0.060 / 0.060
G17     51.3           37.7                8.4 +/-    0.76      12.6 +/-    0.76  0.030 / 0.060
G19     35.8           50.6                7.9 +/-    1.26       9.9 +/-    1.26  0.040 / 0.050
G24     272.2          41.7               11.1 +/-    2.23      15.7 +/-    2.23  0.040 / 0.050
G28     117.5          22.7                8.9 +/-    1.03      18.4 +/-    1.03  0.060 / 0.060