PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/09-09:27:50
G02     19.4           66.0                4.9 +/-    0.57       5.3 +/-    0.57  0.050 / 0.050
G05     159.5          45.5                8.1 +/-    1.48      10.8 +/-    1.48  0.060 / 0.050
G06     45.6           28.1                4.3 +/-    2.56       7.8 +/-    2.56  0.170 / 0.200
G12     245.3          81.0                6.0 +/-    0.84       6.1 +/-    0.84  0.280 / 0.350
G19     87.2           17.1                6.5 +/-    2.01      15.3 +/-    2.01  0.110 / 0.240
G24     220.1          13.8                4.1 +/-    2.22      10.6 +/-    2.22  0.130 / 0.480
G25     312.3          40.9                4.8 +/-    1.02       6.9 +/-    1.02  0.030 / 0.020
G29     294.9          16.1                3.1 +/-    1.68       7.6 +/-    1.68  0.030 / 0.020