PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-09:12:40
G03     194.6          26.3                4.6 +/-    1.98       8.8 +/-    1.98  0.020 / 0.030
G07     288.4          37.5                4.7 +/-    1.63       7.1 +/-    1.63  0.030 / 0.040
G08     141.9          25.8                5.8 +/-    1.54      11.0 +/-    1.54  0.160 / 0.330
G09     322.4          62.7                3.5 +/-    1.16       3.9 +/-    1.16  0.150 / 0.370
G16     44.2           44.5                3.1 +/-    0.56       4.3 +/-    0.56  0.040 / 0.080
G22     178.0          10.0                2.3 +/-    1.19       6.5 +/-    1.19  0.040 / 0.100
G23     82.1           83.3                3.4 +/-    0.46       3.4 +/-    0.46  0.050 / 0.080
G26     43.1           16.9                2.5 +/-    0.95       6.0 +/-    0.95  0.070 / 0.100
G27     102.2          32.1                5.5 +/-    0.67       9.2 +/-    0.67  0.040 / 0.070