PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/22-11:57:40
G02     217.4          58.5                7.9 +/-    0.76       9.1 +/-    0.76  0.080 / 0.080
G06     55.5           73.5                7.7 +/-    0.59       8.0 +/-    0.59  0.080 / 0.080
G12     319.1          38.3                4.5 +/-    0.83       6.8 +/-    0.83  0.030 / 0.030
G17     59.3           29.9                6.5 +/-    1.50      11.4 +/-    1.50  0.030 / 0.030
G19     35.9           51.4                5.3 +/-    0.48       6.6 +/-    0.48  0.040 / 0.060
G24     259.6          41.9                5.9 +/-    1.56       8.3 +/-    1.56  0.100 / 0.070
G28     122.8          14.2                7.4 +/-    1.34      18.8 +/-    1.34  0.040 / 0.070