PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-18:58:00
G01     78.1           32.9               10.0 +/-    0.58      16.6 +/-    0.58  0.040 / 0.050
G07     133.2          30.7               11.6 +/-    0.76      20.0 +/-    0.76  0.040 / 0.060
G11     57.7           34.6                8.6 +/-    0.78      13.8 +/-    0.78  0.050 / 0.140
G13     282.1          38.6               10.9 +/-    1.13      16.3 +/-    1.13  0.050 / 0.110
G15     307.4          14.0                8.3 +/-    2.08      21.0 +/-    2.08  0.050 / 0.110
G17     222.4          63.1               13.1 +/-    1.16      14.5 +/-    1.16  0.050 / 0.100
G18     52.9           20.0                9.4 +/-    1.23      20.6 +/-    1.23  0.120 / 0.140
G19     218.9          36.4               11.3 +/-    1.03      17.4 +/-    1.03  0.120 / 0.120
G28     357.5          61.4                9.1 +/-    0.82      10.2 +/-    0.82  0.080 / 0.240
G30     127.8          65.7               10.1 +/-    0.44      10.9 +/-    0.44  0.080 / 0.300